Technics SA-5570

"4, Strip about %" (20mm) off [Figure 9
the outer covering from
the cable. 1 2 3
@ If connections are made to the “75.9” terminals
These connections should be made by using 75-ohm
coaxial cable from the “752” terminals of this unit, and by
using a matching transformer between the antenna and
this unit in order to match the impedance of the antenna to
that of this unit.
A 300-ohm parallel feeder wire should be used to connect
the matching transformer to the antenna, and the 75-ohm
coaxial cable should be used to connect the matching
transformer to the receiver. The matching transformer
should be installed as near to the antenna as possible.
2, Cut away all except about
%" (10 mm) of the shield
layer, and fold the remain-
der of the shield back
over the covering.
3, Then remove all of the In-
gulation except about %"
(7 mm). %
4. After loosening the screw
of the ground terminal,
insert the end of the cable
behind the clip, then se-
cure it by tightening the
screw.
5. The connection is comple-
ted by connecting the core
of the cable to the terminal
located just below the clip.
FM outdoor ne
antenna See
(20 mm)
on
1300-ohm paraile! _
feeder wire
Matching 75-ohm coaxial cable
transformer
“75a” terminals
Note, however, that most multi-element FM antennas
which have § elements or more include a built-in matching
transformer and, therefore, the 75-ohm coaxial cable can
be connected directly to the antenna.
@ Installation of an antenna exclusively for FM
broadcasts
The location of the exclusive antenna for FM broadcasts
is a very important factor in the determination of tone
quality, and even the best antenna will not perform satis-
factorily if it is installed in a poor location.
Carefully consider, therefore, the following information
before deciding upon the location of the antenna.
1. it should be located in a place which is in the direct path
of the FM broadcast signals, and not where the signals
will be obstructed by buildings or other obstacles.
2. In order to be free of ignition noise interference from
automobiles, etc., it should be located as high above the
ground as possible, and should be as far as possible
from neon and other electric signs.
8. It should be installed 6 feet (2 m) or more from a metat
roof, a concrete building, or from any other antennas,
such as for television.
4, FM antennas have a high directiona! characteristic. In
other words, they are much more sensitive to FM
signals from one certain direction more than any other
direction. The antenna should, therefore, be located so
as to face in the direction of best reception.
5. It is usuaily true that the higher the antenna the better,
although, depending upon the place, it may be that a
lesser height would be more advantageous. Unless
there are special conditions, therefore, a height of 12
feet (4m) or more above the ground is suggested.
@ FM broadcast reception
1. Keeping the volume control at the “0” position, press
the power pushbutton to the “ON” position.
2. Set the input selector to the “FM AUTO" position.
3. Release the tape monitor pushbuttons to the “SOURCE”
position.
4. Release the mode pushbutton to the STEREO” position.
S. Tune the receiver to the desired FM signal.
After roughly locating the desired FM station with the
signal-strength meter, pinpoint the position of least dis-
tortion with the FM center-tuning meter,
The stereo indicator illuminates whenever the receiver
is tuned to a stereo broadcast.
6. After pinpointing the desired station, increase the
volume to the most comfortabie listening level.
7. Make other adjustments In accordance with your taste
and the acoustics of the room.
ANTENNA’:
This unit includes a highly sensitive ferrite-bar antenna for
reception of AM broadcasts and, therefore, there should be
no necessity for connection of an outside antenna except
in an area where signals are especially weak.
I AM outdoor antenna
In weak signal areas, far from broadcasting stations, or in
a reinforced-concrete building, the highly-sensitive built-
in ferrite-bar antenna alone may fail to provide good AM
reception. If so, connect a length of vinyl-covered wire to
the AM antenna terminal (iabeled “AM ANT,” on the rear
panel).
Then place this antenna outdoors a short distance away
from the building. Because the sensitivity of an outdoor
antenna varies greatly with its position, someone should
listen for the strongest signals as the antenna is oriented.
For safety reasons, the antenna should include a lightning
arrester.
igure 10
AM outdoor antenna
“AM ANT" terminal
Vinyl-covered wire